Machine for raising the pile of pile fabrics



Sept. 19, 1939.

J. B. UBBINK MACHINE FOR RAISING THE FILE OF FILE FABRICS Filed May 27, 1938 2 Sheets-Sheet 1 Sept. 3 J. B. UB INK 2,173,404

MACHINE FOR RAISING THE FILE OF FILE FABRICS Filed May '27, 1938 f 2 Sheets-Sheet 2 Patented Sept. 1 9.1939

MACHINE Foa RAISING 'r'nr. Pun or me memos Johan Bernard l Jbbink, Doesburg, Netherlands Application May 27, 1938', Serial No. 210,305

e In the Netherlands May 31', 1937 2 Claims. (01. 26-29 My inventionrelates to means for raising the -pile of pile fabrics such as terry (Turkish towelling), covers and the like. It has particular reference to a machine which serves for raising 5 the pile by means of rotary brushes, and it is an object of my invention to provide a machine of this kind which is more eflicient in action than similar machines hitherto designed.

, In existing machines of this type the towel or the like is passed through between a pair of rotary brushes rotating at higher circumferential speed than corresponds to the linear speed of the towel (for instance Dutch Patent 36,418 and U. S. Patents 1,702,696 and 1,763,675). The operation Of these machines is satisfactory if new towels are treated therein, but they involve the drawconsiderable resistance to any slipping of the 30 towel or cover, so that the traveling velocity of the towel or cover is determined by the circumferential speed of the cylinders and at the same time the pile raised by the first brush is depressed as little as possible by the cylinder cooperating 35 with the second brush. Bythis arrangement of the brushes and cylinders the tensional effect exerted by the brushes is taken up directly by the cylinders cooperating with them, so .that the towel or cover is not acted upon by any-appre 40 ci able pull. By passing the towel or cover over the cylinders cooperating with the brushes I prevent the brushes from gripping the towel or cover and carrying it along, whereby it would be destroyed. While the machines hitherto designed comprise guide rolls serving to prevent the towels or covers from being carried along by the brushes, it hasbeen found that no such protective effect is obtained whenever the towels or covers are 50 slightly worn.

In order to prevent the'towels or covers from winding around the cylinders, I provide grooves in the cylinders and ringsin these grooves of a larger diameter than the cylinders. A

55 The brushes may be acted upon by adjustable springs tending to press them-in the direction of be the case if they were driven by means of gears,

in view of the reaction of the pressure exertedby the teeth;

With each cylinder may cooperate a pressure roller, and the pressure roller cooperating with 15 the second cylinder'may be forced against its cylinder with less force than the'pressure roller cooperating with the first cylinder.

In the drawings afiixed to this specification and forming part thereof an embodiment of my invention is illustrated diagrammatically by way of example.

In thedrawings 1 Fig. 1 is an elevation of one of the uprights of the machine bed showing the cylinders,' etc., in' cross section.

Fig.2 is a cross section of the principal members of the machine, drawn'to a larger scale.

Fig. 3 is a mere diagramillustrating the means for driving the brushes, cylinders and rollers.

Referring to the drawings and first to Fig. l, l is one of the twouprights forming part -of the machine bed, and 2' and 3 are the axles of the two cylinders 4 and 5, these axles as well as hinge pins 6 and l of the arms 8 and 9 being supported in this upright. The arms 8 and 9 form bearings for the axles Ill and II of the rotary brushes l2 and I3 (Fig.2). The brushes consist of non-- curly fibres such as those sold'under the trade names Batria, Colombo or the like. These fibres do not extend radially to the axes, but a little to the rear, whereby the towels or covers are prevented from adhering to them. The cylinders iand 5 are formed with circumferential grooves 4b and 5b, respectively, in which rings of greatwidth or hollow cylinders are seated, the diameter of which is larger than that of the cylinders 4 and 5 and which serve to prevent the towels or covers from winding around the cylinders.

The axles I0 and ii of the rotary brushes extend into longitudinal perforations of the up rights so that the brushes can move relative to the cooperating cylinders, By means of springs l4 and I 5, the pressure of which can be regulated by means of set screws IS, the brushes are pressed in the direction of the cylinders. The arms 8 and 9 are provided with set screws I! which operate with fixed abutments' in order to limit the movement of the brushes l2 and I3. Above the cylinders 4 and 5 are arranged pressure rollers l8 and I9, whose weight acts on the cylin- I ders. On the ends of the axles of these pressure rollers are mounted. ball bearings 20 and 2| 10 which are guided for vertical displacement between vertical guide pieces 22.

Inthe operation of this machine, as illustrated more. particularly in Fig. 2, the towel or cover to be treated is introduced by means of a guide plate 23 between the cylinder 4 and the pressure rol or cylinder l8 cooperating therewith, the speed of rotation of the cylinder 4 determining the travelling speed of the towel or cover. This latter then passes through between the cylinder 4 and the brush I2, whereby the pile on one side is raised in consequence of the fact that the cir-' cumferential speed of the brush is greater than that of the cylinder 4, the pull exerted on the towel or cover by the brush being taken upjby the cylinder. 'Ihe towel or cover is then guided by a guide plate 24 to pass through between the cylinder 5 and the pressure roll or cylinder I9. which latter is lighter in weight than the pressure roll I 8 in order not to press the towel or 'cover against the cylinder 5 with such force that the raised pile would be depressed again. The side of the towel or cover which was not -yet acted upon by the brush, is now brushed by the brush l3, which also rotates at a higher velocity, and the cylinder 5 again prevents any considerable tensional stresses from arising in the towel or cover in consequence of the brush action. The

towel or cover then drops out. Below the cylinder 4 is arranged another guide plate 25 provided at its top end with a small brush 26 which serves to remove from the cylinder any particles which may adhere to it.

The cylinders 4 and 5 are provided with elastic Fig, 3 illustrates the manner of driving the several parts of the machine. A gear 21 drives a toothed wheel 28 mounted on the axle of the cylinder 5. The toothed wheel 28 meshes with another toothed wheel 29 of the same diameter which is mounted on the axle of the cylinder 4, so that the two cylinders 4 and 5 are driven at equal speed, but in opposite senses. With the toothed wheel 29 meshes a gear 30 mounted concentrically of the hinge pin 6 of the arm 8. Similarly the 'wheels 29 and 28 meshing with them, the brushes rotate at a higher speed than the cylinders.

The mounting of the axles l0 and II of the cylinders l2 and 13 in the arms 8' and 9, respectively, serves to render the pressure exerted by the brushes on the textile material treated independent from the reaction of the driving means.

- In an ordinary gear drive this reaction would exert a highly undesirable effect and would render impossible a satisfactory control of the pressure exerted by the brushes, Apart therefrom the chain drive involves the further advantage that by the vibrations of the chains the brushes are driven with jerks, whereby the brush lng action is increased and the releasing of the towels or covers expedited.

I wish it to be understood that I do not desire to be limited-to the exact details of construction shown and described, for obvious modifications will occur to a person skilled in the art.

I claim:

1. A machine for raising the pile of pile fabrics comprising in combination, two rotary brushes arranged in series, a cylinder arranged for 00-- operation with each brush, said cylinders being 2. The machine of claim 1, in which the cylinder arranged for cooperation with the second brush is formed with axially extending grooves.

JOHAN BERNARD UBBINK. 

